With ESXi hosts, you can boot from iSCSI using the software iSCSI adapter or a dependent hardware iSCSI adapter and a network adapter.

When you set up your host to boot from iSCSI, you perform a number of tasks.

1

To begin an iSCSI boot process, a network adapter on your host must have a specially configured iSCSI boot firmware. When you configure the firmware, you specify the networking and iSCSI parameters and enable the adapter for the iSCSI boot.

2

When setting up your host to boot from iBFT iSCSI, change the boot sequence to force your host to boot in an appropriate order.

3

When setting up your host to boot from iSCSI, install the ESXi image to the target LUN.

4

After preparing the host for an iSCSI boot and copying the ESXi image to the iSCSI target, perform the actual boot.